Description:Blackbird is an experiment in Pink Floyd's earlier writing techniques. It's based on continuing a single bass/rhythm line and building instruments on top to make chorus/verse type arrangement. Although nothing like "Welcome to the Machine", it is somewhat of an homage to the song in that it uses this style of writing and uses the "machine" as a metaphor in the lyrics. It's a dark song. It's about every day work, the grind, and how it wears you down while making money for others. This song is a musical expression of that. Its art, so it's much exaggerated. Keep that in mind. It's not personal account of anyone in the band.